On Sat, 1 Mar 2003, Fig TaTam wrote: > Does anyone know under what conditions dWorldStep() function changes > position and linear velocity of bodies to -1.#IND00 ? It could be indicative of a divide-by-zero error somewhere. Are you certain that your time-step is nonzero? -- Nate Waddoups Redmond WA USA http://www.natew.com